| Specimen ID | State | County | Locality | Year | HUC Number | Drainage Name | Status |
| 1447376 | WI | Douglas | St. Louis River, lower, near Allouez Bay | 2017 | 04180000 | Lake Superior | unknown |
| 1474321 | WI | Douglas | Duluth-Superior Harbor, Superior Entry | 2018 | 04180000 | Lake Superior | unknown |
| 1932667 | WI | Douglas | Duluth-Superior Harbor, Superior Entry | 2025 | 04180000 | Lake Superior | established |
| 1932668 | WI | Douglas | Duluth-Superior Harbor, Superior Entry | 2025 | 04180000 | Lake Superior | established |
| 1932669 | WI | Douglas | Duluth-Superior Harbor, Superior Entry | 2025 | 04180000 | Lake Superior | established |
| 1932670 | WI | Douglas | Duluth-Superior Harbor, Superior Entry | 2025 | 04180000 | Lake Superior | established |
| 1932671 | WI | Douglas | Duluth-Superior Harbor, Superior Entry | 2025 | 04180000 | Lake Superior | established |
| 1932672 | WI | Douglas | Duluth-Superior Harbor, Superior Entry | 2025 | 04180000 | Lake Superior | established |
| 1710116 | WI | Douglas | St. Louis River | 2017 | 04180000 | Lake Superior | |
| 1932673 | WI | Douglas | Montreal Pier, Lake Superior | 2025 | 04180000 | Lake Superior | established |
| 1932674 | WI | Douglas | Montreal Pier, Lake Superior | 2025 | 04180000 | Lake Superior | established |
| 1932675 | WI | Douglas | Montreal Pier, Lake Superior | 2025 | 04180000 | Lake Superior | established |
Citation for this information:
U.S. Geological Survey, 2026,
Hemimysis anomala: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 5/9/2026